On Aug 4, 12:31*pm, ransley wrote:
On Aug 4, 7:54*am, Yong Huang wrote:





I have 4 rooms all upstairs. Below 3 are all indoors like living room,
etc. They're cool. One is above outdoor driveway. It's noticeably
warmer. I can't think of any explanation. One day I used a thermometer
to measure floor temperature. It was between 1 and 2 degrees higher
than the floors of the other 3 rooms. I think that explains it. But I
don't think there's anything I can do.

Probably because this room is warmer, the previous owner noticed it
and they didn't want to use this room either. The carpet is much
thicker and less used than the rest of the upstairs. If it's because
the underside is outdoors this room is warmer, what about those many
rooms above a garage? Are they warmer too? What do you do to remedy
it? Thanks.

BTW, I remember in winter, this room is a little colder but I'll
double check that in a few months.

The reason is its fully exposed, insulation could be better, the AC
isnt sized large enough and not enough air circulation. On just
insulating the ceiling, My place had little attic insulation, maybe
R12, I went to R 60 and the second floor was hotter overall as no
night time cooling took effect, it was noticable, but in winter it was
much warmer. You should consider everything, what your windows are,
floor, wall and ceiling insulation, carpet with foam padding does
alot, cellular shades that seal on edges can equal and inch of
fiberglass insulation, and a bigger supply for the AC to that room.
Running the fan continously on your system will do alot to balance out
hot spots, try it while its really hot out. Just running the blower
wont add alot to your bill in these hottest days.- Hide quoted text -

- Show quoted text -

Yes. While the heat that travels through from the floor is one
factor, it could also be that this room has the longest duct run,
insufficient supply ducts or returns, closed damper in the ducts,
collapsed or disconnected ducts along the way, insufficient attic
insulation, etc. All that should be checked. But unfortunately only
a few of those things can be easily fixed.

A mini-split for that room may be a solution.